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G. FAST.

COUPLING FOR SHAFTING- APPLICATION mm uuuvlszp;

'Reissued Aug. 16, 1921.

v Inventor.

Gmfaue FM UNITED STATES PATENT OF ICE.

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Specification of Bel saned Letters Patent. All g 16, 1921.

Original 10. 1,856,880, dated October as, 1920', Serial no. 234,009, filed larch :4, 191a. Application m reissue am m 14, 1921. Serial No. mazes. 1

To all whom it may concern:

Be it known that I, Gus-rave Fas'r, a subject of the King of Sweden, and resident of Mount Washington, Maryland, have invented .certain new and useful Improvements in Couplings for Shaftin'g, of which the following is a specification.

The invention consists in the features and combination and arrangement of parts herecare 0 inafter described and particularly pointed out in. the claims.

i n the accompanying drawings:

1 tion view through the coupling mounted upon the shaft ends.

Fig. 2 is across sectional view. Fig. 3 is a detail sectional view of a part ofthe bearing ringellnember in its relation to the shaft mem and the encircling member. I i

' This coupling is designed to connect two shafts which are supposed to be held in their hearings in axial ali'nement but if through error of installation they are slightly out of line the coupling will take the error. 'It consists of two members 1 fixed to the ends of the shafts, each member having teeth at 2 meshing with teeth on the interior of the annular member At each end of the casing 3"a ring 6 is fixed by screws 7, said ring having an mwardly projecting flange 8 at its inner portion or edge, said flange extending coaxially with the axis of the shafts to' be coupled. Onits interior face the flange 8 is formed with a'rounded seat at 9, which bears upon a cylindrical extension 10 of the member 1. A compact assemblage of these parts is afforded by "forming a recess 11 in the end of. the members 1 toreceive the portion 9.

1 Any error in the alinement of t e shafting re 1 1s 1n part a central vertical secisdivided between the two bearing rings 6,

ugal force the heavy lubricant will be directed to the teeth and this lubricant will also reach the rounded bearings at 9.- I do not limit myself to the means consisting of the teeth of the form and arrangement shown for interlocking the shaft members-1 and the surrounding sleeve or casing. The bearings 9 are located in a plane extending transversely of theshaft ends and across and preferably midway of the length of the driving teeth. T

What -I clainiisz? '1. A flexible coupling for shafts comprising members fixed to the shaft ends, a member encircling the shaft members and having driving means engaging therewith to to the shaft members, and bearings independent of the driving means between the encircling member and the shaft members maintaining contact in all relative positions of the encircling member and shaft members, substantially as'described.

.2. In connection with the features of claim 1 arranging the said bearings at the outer ends of the encircling member and the outer ends of the shaft members, substan-' tially as described. 7

3. In connection with the features of claim 1 forming the hearings on both the encircling member and the shaft members continuousto rock in a direction in the plane of the axis of the members, substantially as described.

4. In connection with the features of claim 1 engaging the encircling member with the shaft members by 'means of teeth or projections extending radially inward from emir cl'mg members and radially outward from the shaft members, substantially as described.

5. In combination with the shafts and members secured at the ends thereof, an annular member encircling the shaft member, said members having teeth engaging each other by which rotary movement is 1mpart I substantially as described.

ed from one shaft to the other, a bearin between the annular member and the sha members to allow movement of the members relative to each other while maintaining the teeth in engagement and means for supply ing the teeth and bearing with lubricant and. retaining the same in place, substantially as described.

6. In combination the shafts with members secured thereto, a member encircling the shaft member, and having means eng ng complementary means on the shaft mem ers for imparting a rotary movement, said en- .circling member having at its ends a portion extending inwardly toward the shaft and provided with an annularbearing engaging a bearing 'on the shaft members by member may rock inwhich the encirclin relation to the sha members, said members having a chamber between them obntaininglubricant and communicating with the engaging means andwith the rockin" bearings to supply the same with lubricant,

7'. In connection with the features of claim 6 the inwardly extending end portions serving as closures for the ends of said chamber, substantially as described.

7 8. In combination the shafts, members mounted thereon having recesses in their end faces, an encircling member interlocking with the shaft members to communicate rotary motion from one to the other and a bearing member on eachend of the encir:

cling member having a portion bearing on the wall of the recess and adapted to have rocking movement thereon, substantially as described. l

9. In combination with the shafts and the members secured thereto, an encircling member having driving engagement with the shaft members but adapted to have movement transverse toits axis, ring shaped members secured to the ends of the encircling member and each having a flange projecting therefrom on its inner face, the shaft members having, recesses in their end faces to recelvethe flanges, which flanges bearv on the wall of the recess, substantially as do:

scribed. g,

10. In combination with the shafts and the members secured thereon, an encircl member composed of two sections divid d v from each othertransverse of the axis ofthe encircling member, rings at the ends ofthe encircling member secured thereto and recesses in the end of'the shaft members re ceiving a portion of the which are members secured' thereon, an encirclin adapted to bear with rocking movement on the walls of therecesses, substantially'as described.

11. In combination the shafts, members securedth'ereon, eachhaving an annular row of teethat or near 1ts end portion, an encircling member having anannular row of y teeth within. its end portions to engage the annular row of teeth of the shaft members,

rings secured to the ends of the encircling member, said rings bearing upon portions movement of the encircling member transof .the shaft members to afford rocking verse to its axis if the shafts become dismember having an annular row" of the shaft members communicating with the.

annular row of teeth, the saidrings forming. a closure to hold, lubricant between themselves and the shaft members: and between the annular rows of-T teeth, substantially as described.

- 13. In combination with the shafts, the

member, said encircling member and she members having interengaging portions, a chamber between said members inclimng outwardly to direct lubricant within the chamber to theinterengaging-portions by,- centrifugal force and rings extending from the ends of -the encircling member and hearing upon portions of the shaft members to have rocklng movement thereon, substantially as described.- a l 14. In combination with the shafts, members secured thereon and inclosing the sa d shaft members an having a continuous bearing at its end with the outer end ortions of said shaft members respective allowing relative movea member encirclin 1 ment between t em in a direction radially of the shafts, said encircling member having driving engagement with the shaft memers;

15. Incombination'with the shafts, mam- 1 bers secured thereon, a member encircling the shaft -members [and having rtions reaching inwardly over the ends of t e shaft members and bearing thereon to permit rela. tive movement radially of one member in respect to another, said encircling member having driving gement with the shaft members, ,substantlally as described. 161111 combmatien with theshafts, members secured thereon, an encircling member having driving engagement with the shaft members and having portions at its ends forming end closures for the spaces between the encircling member and the shaft members, said portions having rocking bearing engagement with the said shaft members.

17. In combination with the shafts, members secured thereto, an encircling member having driving engagement with the shaft members and having rocking bearing engagement with the shaft members at a point outside of the driving bearings between the encircling member and shaft members, said rocking bearing forming a closure for the space between the encircling member and shaft members, in which space the driving engagement takes place, substantially as described.

'18. In combination in a coupling for shafts, member to be secured to the shafts,

. an encircling member, a driving connection between each shaft member and the encircling member, and ring-shaped walls or flanges located between the encircling member and the shaft members at points out beyond the said driving connection, said ring-shaped walls being supported by and having relatively movable engagement with the shaft members, thus holding the encircling member in proper relation to the shaft members and allowing for disalinement of the shafts, substantially as described.

. 19. In combination in a coupling for shafts,-members to be secured to the shafts,

. an encircling member, a driving connection between each shaft member and the encircling member, rings or flanges located between the encircling member and the shaft members at points out beyond the said drivmg connection, said rings or flanges being connected with the encircling member and. havingcompensating engagement with the shaft members to aHow for disalinement of the shafts and to hold lubricant within the enclrcling member, substantially as described.

.320. 'In combination in a coupling for shafts to hold them in substantially axial allnement, a member encircling a shaft end, a member to be connected with one of the shafts, a drive connection between said encircling member and the shaft member having clearance between them in a radial direction, a ring or flange at the end of the encircling member located out beyond the said driving connection and located between the same and the shaft member, saidflange having compensating engagement with the shaft member to accommodate disalinement 66 the two shafts, substantially-as described.

' transversely 21. A flexible couplin forsliafts comprising a sleeve encirclingt e shaft ends having teeth engaging teeth connected with the said shaft ends and having,'in addition to said teeth, rocking bearing engagement with the 70 shaft ends in a plane extending transversel to and substantially midway of the length of the teeth, substantially as described.

22. A flexible coupling for shafts comprising a member enci-rclin the shaft ends having teeth engaging te'et connected with the shaft ends, and having, in addition to said teeth, rocking bearing en gement with the shaft ends, said teeth an rocking bearings being in the same plane extending trans versely-of the shaft ends, substantially as ,described.

23. A flexible shaft coupling comprising a sleeve, teeth thereon for transmitting mo tion from one shaft to the other, and a rocking bearing for the sleeve located in the same plane, extending transversely of the sleeve and shaft axis, in which the teeth are located, substantially as described.

24. A flexible shaft coupling comprising'a member, teeth thereon for transmitting motion from one shaft to the other, a rocking bearing separate from the teeth and located between an end of the member and a shaft end, said member inclosing the teeth and preventing the escape of lubricant contained therein. I

25. A flexible coupling for shafts comprising a member between the shaft ends having teeth engaging teeth connected with'the shaft ends and having, separate from said teeth, rocking bearing engagement with the shaft ends in a plane extending transversely to and substantially midway of the teeth.

26. A flexible coupling for shafts comprising a member between the shaft ends having teeth engaging teeth connected with the shaft ends, and having, in addition to said teeth, rocking bearing engagement with the shaft ends, said teeth and rocking bearings' being in" the same plane extending of the shaft ends, substantially as described. 27. A flexible shaft coupling comprlsing a member having teeth thereon for transmittin motion from one shaft to the other, an a rocking bearing for the member 10- cated in the same lane, extending transversely of the mem er and shaft axis, in which the teeth are located, substantially as described.

28. A flexible shaft coupling comprising a member having teeth'thereon for transmitting motion from one shaft to the other,

a rocking bearing between one end of said member and a shaft end, and a wall between the said member and the shaft end inclosing the teeth and bearing and preventing the escape of lubricant from the coupling, substantially as described.

Q v i 5 7 29. A flexible coupling for shafts comthelength of the teeth, and? within the cir- Erising a sleeve ,encirclin 1 the shaft ends cles of teeth, substantial? as described.

aving teeth engaging teet connected with .In testimony whereof have hereunto set 10 the said shaft ends and haying, in addition my and 'and my seal this 29thv day 5 to said teeth, rocking bearing engagement oi April, 1921. 1 with the shaft ends in a plane extending transversely to and substaninally midway of Y GUSTAYE FAST. [1,. 5.] 

